late 14c., "make a hedge," also "surround with a barricade or palisade;" from hedge (n.). The sense of "dodge, evade" is first recorded 1590s. That of "insure oneself against loss," as in a bet, by playing something on the other side is from 1670s, originally with in; probably from an earlier use of hedge in meaning "secure (a debt) by including it in a larger one which has better security" (1610s). Related: Hedged; hedging. The noun in the wagering sense is from 1736.